KR100613631B1 - Liquid flame-retardant for man made leather - Google Patents

Abstract

The present invention relates to a liquid flame retardant for artificial leather for improving the flame retardancy of artificial leather used in automobile seats, furniture or sofas, and more specifically, the properties of the flame retardant for artificial leather as a liquid, the main component is decabromodi It is composed of phenylethane (DBDPE), hexabromodiphenyl oxide (HBCD) and antimony trioxide, and has excellent flame retardant performance because of its uniformity, dispersibility, permeability and workability, and is a liquid for artificial leather, characterized in that it is environmentally friendly. It is about flame retardant.

Liquid flame retardant for artificial leather according to the present invention having the above structure is well blended with the impregnated liquid of the artificial leather which is a polyurethane component, the workability is good, and the dispersibility is good, so that the flame retardant is evenly dispersed in the impregnated liquid of artificial leather. Because of the excellent flame retardant performance of artificial leather and the nature of the flame retardant, the flame retardant is not scattered when blended, so the environment of the workplace is comfortable. Especially, the theoretical possibility of dioxin generation during the recent combustion is an issue. Since decabromodiphenylethane (DBDPE) is used in place of decabromodiphenyl oxide (DBDPO) or oxabromophenyl ether (OBDPE) as an alternative flame retardant, antimony carcinogen dioxins do not occur, which is an environmentally friendly advantage. .

 For artificial leather, liquid flame retardant, polyurethane, decabromodiphenylethane (DBDPE), hexabromodiphenyloxide (HBCD), antimony trioxide, toluene, methylethylketone, dimethylformamide

Description

Liquid Flame-retardant for Man made leather}

The present invention relates to a liquid flame retardant for artificial leather, and more particularly, since the properties of the artificial leather flame retardant are excellent in uniformity, dispersibility, permeability, and workability in a liquid phase, the flame retardant performance is excellent and environmentally friendly. It relates to a liquid flame retardant for artificial leather.

     In general, flame retardants are classified into additive flame retardants which blend with polymers such as synthetic resins to impart flame retardancy and reactive flame retardants containing flame retardant components in the polymer itself, and additive flame retardants are classified into organic flame retardants and inorganic flame retardants. Organic flame retardants are flame retardants whose main components are halogen-based compounds such as bromine and chlorine, and phosphorus compounds such as phosphate esters, and inorganic flame retardants are antimony oxides such as antimony trioxide and antimony pentoxide, hydroxide compounds such as aluminum hydroxide, and heavy metals. Compound-based, calcium carbonate (CaCO3), magnesium carbonate (MgHCO3), clay, talc and the like as a main component flame retardant, inorganic flame retardant is mainly used as auxiliary flame retardant.

     In addition, since most of the conventional flame retardants for artificial leather are in powder form, the flame retardant is scattered when the main component is a synthetic resin solution for artificial leather, which is a polyurethane component, which not only contaminates the environment of the workplace but also causes a defect of the mixture. In addition, since the flame retardant is in the form of powder, there is a high possibility that problems may occur during dyeing and coating processes for processing artificial leather because it is not well dispersed in the main compound solution of the polyurethane component when mixed with the impregnation solution. have.

     Meanwhile, antimony trioxide, which is used as a flame retardant for artificial leather, has a large synergistic effect, and thus is commonly used together with halogen flame retardants such as bromine and chlorine. In particular, decabromodiphenyl oxide (DBDPO) or oxabromophenyl ether (OBDPE), which is problematic because of the theoretical possibility of dioxin generation during combustion among brominated flame retardants in Europe and Germany, has an excellent flame retardant performance. In parallel with the use of the above flame retardant, the development of alternative flame retardants has been accelerated since the fire retardant is a big issue in connection with environmental problems due to the generation of dioxin during combustion.

The present invention is to solve the problems as described above, by developing the properties of the artificial leather flame retardant in the liquid phase, it is well blended with the synthetic resin for artificial leather, a polyurethane component, good workability, and good dispersibility Therefore, since the flame retardant is uniformly dispersed in the impregnation solution of artificial leather, the flame retardant performance of the artificial leather is excellent, and since the properties of the flame retardant are liquid, the flame retardant is not scattered at the time of blending, so the environment of the workplace is pleasant and environmentally friendly. The purpose is to provide a flame retardant for leather.

In the present invention, decabromodiphenyl ethane (DBDPE) is used as an alternative flame retardant instead of decabromodiphenyl oxide (DBDPO) or oxabromophenyl ether (OBDPE), which is a problem that the theoretical possibility of dioxin generation during combustion becomes an issue. It is another object to provide a flame retardant for artificial leather, characterized in that it is eco-friendly because it does not generate dioxin, which is a carcinogen.

The present invention relates to a liquid flame retardant for artificial leather for improving the flame retardancy of artificial leather used in automobile seats, furniture or sofas, and more specifically, the properties of the flame retardant for artificial leather as a liquid, the main component is decabromodi It is composed of phenylethane (DBDPE), hexabromodiphenyl oxide (HBCD) and antimony trioxide, and has excellent flame retardant performance because of its uniformity, dispersibility, permeability and workability, and is a liquid for artificial leather, characterized in that it is environmentally friendly. It is about flame retardant.

The components of the liquid retardant for artificial leather according to the present invention are as follows.

In flame retardants for artificial leather,

15 to 25% by weight of decabromodiphenylethane (DBDPE) as the main flame retardant, 10 to 20% by weight of hexabromodiphenyl oxide (HBCD) and 20 to 30% by weight of antimony trioxide as an auxiliary flame retardant;

20-50% by weight of dimethylformamide (DMF) as a solvent;

3 to 7% by weight of polyurethane resin;

1 to 4% by weight of yellowing agent and 1 to 3% by weight of dispersant;

It is characterized in that the property is liquid.

The decabromodiphenyl ethane (DBDPE) is a main flame retardant to generate a non-flammable gas to block the oxygen in artificial leather to prevent combustion, it is excellent in flame retardancy and heat resistance, in particular, the theoretical possibility of the generation of dioxin during recent combustion It is an alternative flame retardant to decabromodiphenyl oxide (DBDPO), which is becoming an issue. The mixing amount of decabromodiphenylethane (DBDPE) is preferably 15 to 25% by weight, and if the mixing amount is less than 15% by weight, the flame retardant performance may be lowered. There is an uneconomical problem because the flame retardant performance does not increase.

The hexabromodiphenyl oxide (HBCD) acts as a main flame retardant to synergize with the decabromodiphenylethane (DBDPE) to improve the flame retardant performance. The blending amount of hexabromodiphenyl oxide (HBCD) is preferably 10 to 20% by weight. If the blending amount is less than 10% by weight, the flame retardant performance may be lowered. There is a non-economic problem because the resulting flame retardant performance does not increase.

As the auxiliary flame retardant, antimony trioxide synergizes with the main flame retardant to improve the flame retardant performance, the mixing amount is preferably 20 to 30% by weight, when the mixing amount is less than 20% by weight compared to the main flame retardant Due to insufficient content of auxiliary flame retardant, there is a possibility that the flame retardant performance may be lowered due to insufficient synergy with the main flame retardant, and if it exceeds 30% by weight, the flame retardant performance is particularly improved even if the amount of auxiliary flame retardant is increased compared to the main flame retardant. It doesn't work.

The solvent is dimethylformamide (DMF), which dissolves the main flame retardant, auxiliary flame retardant, and polyurethane resin to liquefy the fire retardant composition. Because of its good dispersibility and good dispersibility, the flame retardant is dispersed evenly in the impregnation solution of artificial leather, so the flame retardant performance of the artificial leather is excellent, and since the flame retardant property is liquid, the flame retardant is not scattered when blended, so the environment of the workplace is contaminated. Will not be.

The mixing amount of the dimethylformamide (DMF) is preferably 20 to 50% by weight, and when the mixing amount is less than 20% by weight, since the content of the solvent is insufficient compared to the content of the flame retardant, there is a concern that the components in the composition may not be sufficiently mixed. And, if the content exceeds 50% by weight, each component in the composition is well mixed, but there is a fear that the flame retardant performance is lowered because the content of the flame retardant is insufficient compared to the content of the solvent.

The solvent usable in the present invention may be used by selecting one or more of the above-mentioned dimethylformamide (DMF), toluene or methyl ethyl ketone.

The synthetic resin used in the present invention is a polyurethane resin, and by using a polyurethane resin which is the same material as the synthetic resin for artificial leather, the flame retardant of the present invention can be well blended and dispersed with the synthetic resin solution for artificial leather, thereby providing excellent flame retardant performance. It becomes possible to exercise. In the present invention, the mixing amount of the polyurethane resin is preferably 3 to 7% by weight, and when the mixing amount is less than 3% by weight, there is a possibility that the mixture may not be sufficiently mixed with the flame retardant composition due to the lack of synthetic resin solution, and when it exceeds 7% by weight. Due to excessive mixing of the synthetic resin solution, the compatibility with the flame retardant may be deteriorated, thereby reducing the flame retardant performance.

The yellowing inhibitor serves to prevent yellowing of artificial leather. And the anti-yellowing agent is preferably 1 to 4% by weight of the mixed amount, if less than the range of the mixed amount there is a fear that the performance of the anti-yellowing, the use of more than the above range does not particularly improve the anti-yellowing performance Do not. The yellowing inhibitor usable in the present invention is a benzotriazole compound, 2- (3 ', 5-di-t-butyl-2'-hydroxyphenyl) -5-chloro benzotriazole, 2- (3', 5- Di-isobutyl-2'-hydroxyphenyl) -5-chloro benzotriazole, 2- (2'-hydroxy-3'-isopropyl-5'-octylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-isobutyl-5'-propylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-propylphenyl ) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-octylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3 ' -t-butyl-5'-isooctylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl) -5-chlorobenzotriazole It is preferable to select and use a branch.

And the dispersant serves to disperse the flame retardant contained in the composition by adjusting the viscosity of the flame retardant composition, the mixing amount is preferably 1 to 3% by weight. The mixing amount of the dispersant is If it is less than the mixing amount range, the flame retardant contained in the flame retardant composition may not be dispersed well, and if it exceeds the mixing amount, the viscosity of the composition may be too low. There is. It is preferable to use fumed silica as a dispersant usable in the present invention.

Hereinafter, the configuration of the present invention will be described in detail with reference to Examples, and the present invention is not necessarily limited to the following Examples.

Example

( Examples 1 to 3) and ( Comparative Examples 1 to 3)

To prepare a liquid flame retardant for artificial leather of the following components under the same conditions as shown in Table 1 below.

                           TABLE 1

                                                              (weight%)

Ingredient Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 DBDPE 15 20 25 - 25 20 HBCD 15 10 10 25 - 20 Antimony trioxide 20 20 15 15 15 - DMF 42 41 40 52.5 50 58 Polyurethane resin 5 5 5 5 5 5 Yellowing inhibitor 2 2 2 2 2 2 Dispersant One 2 3 0.5 3 5

After preparing the liquid flame retardant for artificial leather prepared according to the contents of Table 1, the samples of Examples 1 to 3 and Comparative Examples 1 to 3 were taken to 80% by weight of the synthetic resin solution for artificial leather manufacturing the liquid flame retardant 20 After the artificial leather was prepared by adding the wt%, the physical properties were tested. The results are as shown in <Table 2>.

                            TABLE 2

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Flame Retardant (mm / min) SE SE SE 131 125 171 Daylight fastness 5.5 5.5 5.5 5.5 5.5 5.5

Note: SE (self-extinguishing): It means ignition but it does not reach the mark A and goes out below 50mm or goes off within 60 seconds.

Test Methods

1. Flame retardant

After measuring according to the test method of KSK 0582, calculate the combustion speed (mm / min) according to the following method.

Burning speed (mm / min) = burning length (mm) / burning time (sec) × 60

2. Daylight fastness

Hang the artificial leather sample on the Fade-O-meter and light it with carbon rod or light from the Xenon (ultraviolet rays), and after 5 hours, if the change in the original color is detected, 1st class, 10 hours If changes are detected, it is said to be Grade 2, 20 hours are Grade 3, 40 hours are Grade 4, 80 hours are Grade 5, and even if 160 hours are not detected, it is said to be Grade 6.

According to the results of <Table 2>, Examples 1 to 3 were found to be excellent in all of the flame retardancy properties compared to Comparative Examples 1 to 3, in the case of Comparative Examples 1 to 3 the content of the main flame retardant or auxiliary flame retardant It can be confirmed that the flame retardant performance is lower than that of Examples 1 to 3 because it is not added in an appropriate ratio. And it was confirmed that both the Examples and Comparative Examples were excellent in the properties of daylight fastness, which is attributed to the same amount of anti-yellowing agent added to each liquid flame retardant composition.

Liquid flame retardant for artificial leather according to the present invention having the above structure is well blended with the impregnated liquid of artificial leather, which is a polyurethane component, good workability, and good dispersibility, so that the flame retardant is evenly dispersed in the impregnated liquid of artificial leather. Because of the excellent flame retardant performance of artificial leather and the nature of the flame retardant, the flame retardant is not scattered when blended, so the environment of the workplace is comfortable. Especially, the theoretical possibility of dioxin generation during the recent combustion is an issue. Since decabromodiphenylethane (DBDPE) is used in place of decabromodiphenyl oxide (DBDPO) or oxabromophenyl ether (OBDPE) as an alternative flame retardant, antimony carcinogen dioxins do not occur, which is an environmentally friendly advantage. .

Claims (4)

In flame retardants for artificial leather, 15 to 25% by weight of decabromodiphenylethane (DBDPE) as the main flame retardant, 10 to 20% by weight of hexabromodiphenyl oxide (HBCD) and 20 to 30% by weight of antimony trioxide as an auxiliary flame retardant; 20-50% by weight of dimethylformamide (DMF) as a solvent; 3 to 7% by weight of polyurethane resin; 1 to 4% by weight of yellowing agent and 1 to 3% by weight of dispersant; Liquid flame retardant for artificial leather, characterized in that consisting of. The liquid flame retardant for artificial leather according to claim 1, wherein the solvent may be selected from one or more of the dimethylformamide (DMF), toluene or methyl ethyl ketone. According to claim 1, wherein the anti-yellowing agent is a benzotriazole-based compound 2- (3 ', 5-di-t-butyl-2'-hydroxyphenyl) -5-chloro benzotriazole, 2- (3', 5-di-isobutyl-2'-hydroxyphenyl) -5-chloro benzotriazole, 2- (2'-hydroxy-3'-isopropyl-5'-octylphenyl) -5-chlorobenzotriazole , 2- (2'-hydroxy-3'-isobutyl-5'-propylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-propyl Phenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-octylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy- 3'-t-butyl-5'-isooctylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl) -5-chlorobenzotriazole Liquid flame retardant for artificial leather, characterized in that using one of the choice. The liquid flame retardant of artificial leather according to claim 1, wherein the dispersant is fumed silica.